Yeah, Amazon has a system to determine the most cost-effective shipping, including where to ship from to begin with, and even shipping the same item even if it

Yeah, Amazon has a system to determine the most cost-effective shipping, including where to ship from to begin with, and even shipping the same item even if it belongs to another seller, if it is easier to ship. It's not just a greedy algorithm like a market system to get the lowest costs for the first orders only.